This is information on a product in full production.
March 2012 Doc ID 6739 Rev 27 1/44
44
LD1086xx
1.5 A adjustable and fixed low drop positive voltage regulator
Datasheet − production data
Features
■Typical dropout: 1.3 V at 1.5 A
■Three-terminal adjustable or fixed output
voltage: 1.8 V, 2.5 V, 3.3 V, 5 V, 12 V
■Automotive grade (adjustable VOUT in TO-220
and DPAK packages only)
■Output current guaranteed up to 1.5 A
■Output tolerance: ± 1 % at 25 °C and ± 2 % in
full temperature range
■Internal power and thermal limit
■Wide operating temperature range - 40 °C to
125 °C
■Package available: TO-220, D²PAK, D²PAK/A,
DPAK and DFN8 (4x4 mm)
■Pinout compatibility with standard adjustable
voltage regulators
Description
The LD1086xx is a low drop voltage regulator
capable of providing up to 1.5 A of output current.
Dropout is guaranteed at a maximum of 1.2 V at
the maximum output current, decreasing at lower
loads. The LD1086xx is pin-to-pin compatible with
older 3-terminal adjustable regulators, but has
better performance in terms of drop and output
tolerance. The 2.85 V output version is suitable for
SCSI-2 active terminations. Unlike PNP
regulators, where a part of the output current is
wasted as quiescent current, the LD1086xx
quiescent current flows into the load, increasing
efficiency. Only a 10 µF (minimum) capacitor is
needed for stability. The device is available in a
TO-220, D²PAK, D²PAK/A, DPAK or DFN8 (4x4
mm) package. On-chip trimming allows the
regulator to reach a very tight output voltage
tolerance; within ± 1 % at 25 °C. The LD1086xx is
available as automotive grade for adjustable
output voltages in the TO-220 and DPAK
packages. The PAT, SYL, SBL statistical tests
have been performed, and the devices are
qualified according to the AEC-Q100 specification
for the automotive market in the temperature
range of - 40 °C to 125 °C.
DPAK
D²PAK/A
TO-220
D²PAK DFN8 (4x4)
Table 1. Device summary
Part numbers
LD1086XX LD1086XX18 LD1086XX33
LD1086XX12 LD1086XX25 LD1086XX50
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Contents LD1086xx
2/44 Doc ID 6739 Rev 27
Contents
1 Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
2 Pin configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
3 Maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
4 Schematic application . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
5 Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
6 Typical application . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
7 Package mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
8 Order codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
9 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
LD1086xx List of tables
Doc ID 6739 Rev 27 3/44
List of tables
Table 1. Device summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Table 2. Absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Table 3. Thermal data. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Table 4. Electrical characteristics of LD1086#18 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Table 5. Electrical characteristics of LD1086#25 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Table 6. Electrical characteristics of LD1086#33 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Table 7. Electrical characteristics of LD1086#36 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Table 8. Electrical characteristics of LD1086#50 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Table 9. Electrical characteristics of LD1086#12 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Table 10. Electrical characteristics of LD1086# . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Table 11. Electrical characteristics of LD1086DTTRY and LD1086VY (Automotive Grade) . . . . . . . 16
Table 12. TO-220 mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Table 13. D²PAK mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Table 14. Footprint data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
Table 15. D²PAK/A mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
Table 16. Footprint data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
Table 17. DFN8L (4x4 mm.) mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
Table 18. Reel DFN8L dimensions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
Table 19. Order codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
Table 20. Document revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
List of figures LD1086xx
4/44 Doc ID 6739 Rev 27
List of figures
Figure 1. Schematic diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Figure 2. Pin connections (top view) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Figure 3. Application circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Figure 4. Output voltage vs. temp. (VI = 5 V). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Figure 5. Output voltage vs. temp. (VI = 15 V). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Figure 6. Output voltage vs. temperature (VI = 4.25 V) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Figure 7. Short circuit current vs. dropout voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Figure 8. Line regulation vs. temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Figure 9. Load regulation vs. temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Figure 10. Dropout voltage vs. temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Figure 11. Dropout voltage vs. output current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Figure 12. Adjust pin current vs. input voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Figure 13. Adjust pin current vs. temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Figure 14. Adjust pin current vs. output current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Figure 15. Quiescent current vs. output current. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Figure 16. Quiescent current vs. input voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Figure 17. Supply voltage rejection vs. output current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Figure 18. Supply voltage rejection vs. frequency . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Figure 19. Supply voltage rejection vs. temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Figure 20. Minimum load current vs. temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Figure 21. Stability for adjustable. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Figure 22. Stability for 2.85 V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Figure 23. Stability for 12 V . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Figure 24. Line transient (VI = 12 to 13 V) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Figure 25. Line transient (IO = 200 mA) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Figure 26. Line transient (CADJ = 1 µF) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Figure 27. Load transient . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Figure 28. Load transient (Trise = Tfall = 10 µs) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Figure 29. Thermal protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Figure 30. Drawing dimension TO-220 (type STD-ST Dual Gauge) . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Figure 31. Drawing dimension TO-220 (type STD-ST Single Gauge) . . . . . . . . . . . . . . . . . . . . . . . . . 24
Figure 32. Drawing dimension tube for TO-220 Dual Gauge (mm.) . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Figure 33. Drawing dimension tube for TO-220 Single Gauge (mm.) . . . . . . . . . . . . . . . . . . . . . . . . . 25
Figure 34. Drawing dimension D²PAK (type STD-ST) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Figure 35. Drawing dimension D²PAK (type WOOSEOK-SUBCON.) . . . . . . . . . . . . . . . . . . . . . . . . . 28
Figure 36. D²PAK footprint recommended data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
Figure 37. Drawing dimension D²PAK/A (type STD-ST) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
Figure 38. Drawing dimension D²PAK/A (type WOOSEOK-Subcon.) . . . . . . . . . . . . . . . . . . . . . . . . . 32
Figure 39. D²PAK/A footprint recommended data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
Figure 40. DFN8L package outline . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
Figure 41. DFN8L footprint - recommended data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
Figure 42. DFN8L carrier tape (dimension are in mm.) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
Figure 43. Reel DFN8L drawing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
LD1086xx Diagram
Doc ID 6739 Rev 27 5/44
1 Diagram
Figure 1. Schematic diagram
Pin configuration LD1086xx
6/44 Doc ID 6739 Rev 27
2 Pin configuration
Note: The TAB is physically connected to the output (this is valid for the TO-220 package too).
Figure 2. Pin connections (top view)
D²PAK
D²PAK/A
TO-220
DFN8 (4X4)
OUTPUT
DPAK
LD1086xx Maximum ratings
Doc ID 6739 Rev 27 7/44
3 Maximum ratings
Note: Absolute maximum ratings are those values beyond which damage to the device may occur.
Functional operation under these condition is not implied.
Table 2. Absolute maximum ratings
Symbol Parameter Value Unit
VIDC input voltage 30 V
IOOutput current Internally Limited mA
PDPower dissipation Internally Limited mW
TSTG Storage temperature range -55 to +150 °C
TOP Operating junction temperature range -40 to +125 °C
Table 3. Thermal data
Symbol Parameter TO-220 D²PAK
D²PAK/A DPAK DFN8 Unit
RthJC Thermal resistance junction-case 5 3 8 1.5 °C/W
RthJA Thermal resistance junction-ambient 50 62.5 33 °C/W
Schematic application LD1086xx
8/44 Doc ID 6739 Rev 27
4 Schematic application
Figure 3. Application circuit
VOVREF 1R2
R1
-------+
⎝⎠
⎛⎞
⋅=
LD1086xx Electrical characteristics
Doc ID 6739 Rev 27 9/44
5 Electrical characteristics
VI = 4.8 V, CI = CO =10 µF, TA = -40 to 125 °C, unless otherwise specified.
Table 4. Electrical characteristics of LD1086#18
Symbol Parameter Test condition Min. Typ. Max. Unit
VOOutput voltage (1) IO = 0 mA, TJ = 25°C 1.782 1.8 1.818 V
IO = 0 to 1.5A, VI = 3.4 to 30V 1.764 1.8 1.836 V
ΔVOLine regulation IO = 0 mA, VI = 3.4 to 18V, TJ = 25°C 0.2 4 mV
IO = 0 mA, VI = 3.4 to 15V 0.4 4 mV
ΔVOLoad regulation IO = 0 to 1.5A, TJ = 25°C 0.5 8 mV
IO = 0 to 1.5A 1 16 mV
VdDropout voltage IO = 1.5A 1.3 1.5 V
IqQuiescent current VI ≤ 30V 5 10 mA
Isc Short circuit current VI - VO = 5V 1.5 2 A
VI - VO = 25V 0.05 0.02 A
Thermal regulation TA = 25°C, 30ms pulse 0.01 0.04 %/W
SVR Supply voltage rejection f = 120 Hz, CO = 25 µF, IO = 1.5A
VI = 6.8 ± 3V 60 82 dB
eN RMS Output noise voltage (% of
VO)TA = 25°C, f =10Hz to 10kHz 0.003 %
S Temperature stability 0.5 %
S Long term stability TA = 125°C, 1000Hrs 0.5 %
1. See short-circuit current curve for available output current at fixed dropout.
Electrical characteristics LD1086xx
10/44 Doc ID 6739 Rev 27
VI = 5.5 V, CI = CO =10 µF, TA = -40 to 125 °C, unless otherwise specified.
Table 5. Electrical characteristics of LD1086#25
Symbol Parameter Test condition Min. Typ. Max. Unit
VOOutput voltage (1) IO = 0 mA, TJ = 25°C 2.475 2.5 2.525 V
IO = 0 to 1.5A, VI = 4.1 to 30V 2.45 2.5 2.55 V
ΔVOLine regulation IO = 0 mA, VI = 4.1 to 18V, TJ = 25°C 0.2 4 mV
IO = 0 mA, VI = 4.1 to 18V 0.4 4 mV
ΔVOLoad regulation IO = 0 to 1.5A, TJ = 25°C 0.5 8 mV
IO = 0 to 1.5A 1 16 mV
VdDropout voltage IO = 1.5A 1.3 1.5 V
IqQuiescent current VI ≤ 30V 5 10 mA
Isc Short circuit current VI - VO = 5V 1.5 2 A
VI - VO = 25V 0.05 0.2 A
Thermal regulation TA = 25°C, 30ms pulse 0.008 0.04 %/W
SVR Supply voltage rejection f = 120 Hz, CO = 25 µF, IO = 1.5A
VI = 7.5 ± 3V 60 81 dB
eN RMS Output noise voltage (% of
VO)TA = 25°C, f =10Hz to 10kHz 0.003 %
S Temperature stability 0.5 %
S Long term stability TA = 125°C, 1000Hrs 0.5 %
1. See short-circuit current curve for available output current at fixed dropout.
LD1086xx Electrical characteristics
Doc ID 6739 Rev 27 11/44
VI = 6.3 V, CI = CO =10 µF, TA = -40 to 125 °C, unless otherwise specified.
Table 6. Electrical characteristics of LD1086#33
Symbol Parameter Test condition Min. Typ. Max. Unit
VOOutput voltage (1) IO = 0 mA, TJ = 25°C 3.267 3.3 3.333 V
IO = 0 to 1.5A, VI = 4.9 to 30V 3.234 3.3 3.366 V
ΔVOLine regulation IO = 0 mA, VI = 4.9 to 18V, TJ = 25°C 0.5 6 mV
IO = 0 mA, VI = 4.9 to 18V 1 6 mV
ΔVOLoad regulation IO = 0 to 1.5A, TJ = 25°C 1 10 mV
IO = 0 to 1.5A 7 25 mV
VdDropout voltage IO = 1.5A 1.3 1.5 V
IqQuiescent current VI ≤ 30V 5 10 mA
Isc Short circuit current VI - VO = 5V 1.5 2 A
VI - VO = 25V 0.05 0.2 A
Thermal regulation TA = 25°C, 30ms pulse 0.008 0.04 %/W
SVR Supply voltage rejection f = 120 Hz, CO = 25 µF, IO = 1.5A
VI = 8.3 ± 3V 60 79 dB
eN RMS Output noise voltage (% of
VO)TA = 25°C, f =10Hz to 10kHz 0.003 %
S Temperature stability 0.5 %
S Long term stability TA = 125°C, 1000Hrs 0.5 %
1. See short-circuit current curve for available output current at fixed dropout.
Electrical characteristics LD1086xx
12/44 Doc ID 6739 Rev 27
VI = 6.6 V, CI = CO =10 µF, TA = -40 to 125 °C, unless otherwise specified.
Table 7. Electrical characteristics of LD1086#36
Symbol Parameter Test condition Min. Typ. Max. Unit
VOOutput voltage (1) IO = 0 mA, TJ = 25°C 3.564 3.6 3.636 V
IO = 0 to 1.5A, VI = 5.2 to 30V 3.528 3.6 3.672 V
ΔVOLine regulation IO = 0 mA, VI = 5.2 to 18V, TJ = 25°C 0.5 10 mV
IO = 0 mA, VI = 5.2 to 18V 1 10 mV
ΔVOLoad regulation IO = 0 to 1.5A, TJ = 25°C 3 15 mV
IO = 0 to 1.5A 7 25 mV
VdDropout voltage IO = 1.5A 1.3 1.5 V
IqQuiescent current VI ≤ 30V 5 10 mA
Isc Short circuit current VI - VO = 5V 1.5 2 A
VI - VO = 25V 0.05 0.2 A
Thermal regulation TA = 25°C, 30ms pulse 0.01 0.04 %/W
SVR Supply voltage rejection f = 120 Hz, CO = 25 µF, IO = 1.5A
VI = 8.6 ± 3V 60 78 dB
eN RMS Output noise voltage (% of
VO)TA = 25°C, f =10Hz to 10kHz 0.003 %
S Temperature stability 0.5 %
S Long term stability TA = 125°C, 1000Hrs 0.5 %
1. See short-circuit current curve for available output current at fixed dropout.
LD1086xx Electrical characteristics
Doc ID 6739 Rev 27 13/44
VI = 8 V, CI = CO =10 µF, TA = -40 to 125 °C, unless otherwise specified.
Table 8. Electrical characteristics of LD1086#50
Symbol Parameter Test condition Min. Typ. Max. Unit
VOOutput voltage (1) IO = 0 mA, TJ = 25°C 4.95 5 5.05 V
IO = 0 to 1.5A, VI = 6.6 to 30V 4.9 5 5.1 V
ΔVOLine regulation IO = 0 mA, VI = 6.6 to 20V, TJ = 25°C 0.5 10 mV
IO = 0 mA, VI = 6.6 to 20V 1 10 mV
ΔVOLoad regulation IO = 0 to 1.5A, TJ = 25°C 5 20 mV
IO = 0 to 1.5A 10 35 mV
VdDropout voltage IO = 1.5A 1.3 1.5 V
IqQuiescent current VI ≤ 30V 5 10 mA
Isc Short circuit current VI - VO = 5V 1.5 2 A
VI - VO = 25V 0.05 0.2 A
Thermal regulation TA = 25°C, 30ms pulse 0.01 0.04 %/W
SVR Supply voltage rejection f = 120 Hz, CO = 25 µF, IO = 1.5A
VI = 10 ± 3V 60 75 dB
eN RMS Output noise voltage (% of
VO)TA = 25°C, f =10Hz to 10kHz 0.003 %
S Temperature stability 0.5 %
S Long term stability TA = 125°C, 1000Hrs 0.5 %
1. See short-circuit current curve for available output current at fixed dropout.
Electrical characteristics LD1086xx
14/44 Doc ID 6739 Rev 27
VI = 15 V, CI = CO =10 µF, TA = -40 to 125 °C, unless otherwise specified.
Table 9. Electrical characteristics of LD1086#12
Symbol Parameter Test condition Min. Typ. Max. Unit
VOOutput voltage (1) IO = 0 mA, TJ = 25°C 11.88 12 12.12 V
IO = 0 to 1.5A, VI = 13.8 to 30V 11.76 12 12.24 V
ΔVOLine regulation
IO = 0 mA, VI = 13.8 to 25V,
TJ = 25°C 125mV
IO = 0 mA, VI = 13.8 to 25V 2 25 mV
ΔVOLoad regulation IO = 0 to 1.5A, TJ = 25°C 12 36 mV
IO = 0 to 1.5A 24 72 mV
VdDropout voltage IO = 1.5A 1.3 1.5 V
IqQuiescent current VI ≤ 30V 5 10 mA
Isc Short circuit current VI - VO = 5V 1.5 2 A
VI - VO = 25V 0.05 0.2 A
Thermal regulation TA = 25°C, 30ms pulse 0.01 0.04 %/W
SVR Supply voltage rejection f = 120 Hz, CO = 25 µF, IO = 1.5A
VI = 17 ± 3V 54 66 dB
eN RMS Output noise voltage (% of
VO)TA = 25°C, f =10Hz to 10kHz 0.003 %
S Temperature stability 0.5 %
S Long term stability TA = 125°C, 1000Hrs 0.5 %
1. See short-circuit current curve for available output current at fixed dropout.
LD1086xx Electrical characteristics
Doc ID 6739 Rev 27 15/44
VI = 4.25 V, CI = CO =10 µF, TA = -40 to 125 °C, unless otherwise specified.
Table 10. Electrical characteristics of LD1086#
Symbol Parameter Test condition Min. Typ. Max. Unit
VOOutput voltage (1) IO = 10mA TJ = 25°C 1.237 1.25 1.263 V
IO = 10mA to 1.5A, VI = 2.85 to 30V 1.225 1.25 1.275 V
ΔVOLine Regulation
IO = 10mA, VI = 2.8 to 16.5V,
TJ = 25°C 0.015 0.2 %
IO = 10mA, VI = 2.8 to 16.5V 0.035 0.2 %
ΔVOLoad Regulation IO = 10mA to 1.5A, TJ = 25°C 0.1 0.3 %
IO = 0 to 1.5A 0.2 0.4 %
VdDropout Voltage IO = 1.5A 1.3 1.5 V
IO(min) Minimum Load Current VI = 30V 3 10 mA
Isc Short Circuit Current VI - VO = 5V 1.5 2.3 A
VI - VO = 25V 0.05 0.2 A
Thermal Regulation TA = 25°C, 30ms pulse 0.01 0.04 %/W
SVR Supply Voltage Rejection f = 120 Hz, CO = 25 µF,CADJ = 25 µF,
IO = 1.5A, VI = 6.25 ± 3V 60 88 dB
IADJ Adjust Pin Current VI = 4.25V, IO = 10 mA 40 120 µA
ΔIADJ Adjust Pin Current Change (1) IO = 10mA to 1.5A, VI = 2.8 to 16.5V 0.2 5 µA
eN RMS Output Noise Voltage (%
of VO)TA = 25°C, f =10Hz to 10kHz 0.003 %
S Temperature Stability 0.5 %
S Long Term Stability TA = 125°C, 1000Hrs 0.5 %
1. See short-circuit current curve for available output current at fixed dropout.
Electrical characteristics LD1086xx
16/44 Doc ID 6739 Rev 27
VI = 4.25 V, CI = CO =10 µF, TA = -40 to 125 °C, unless otherwise specified.
Table 11. Electrical characteristics of LD1086DTTRY and LD1086VY (Automotive Grade)
Symbol Parameter Test condition Min. Typ. Max. Unit
VOOutput voltage (1) IO = 10 mA TA = 25°C 1.237 1.25 1.263 V
IO = 10 mA to 1.5 A, VI = 2.85 to 30 V 1.225 1.25 1.275 V
ΔVOLine regulation IO = 10 mA, VI = 2.8 to 16.5 V 0.035 0.2 %
ΔVOLoad regulation IO = 0 to 1.5 A 0.2 0.4 %
VdDropout voltage IO = 1.5 A 1.3 1.5 V
IO(min) Minimum load current VI = 30 V 3 10 mA
Isc Short circuit current VI - VO = 5 V, TA = 25°C 1.5 2.3 A
VI - VO = 25 V, TA = 25°C 0.05 0.2 A
Thermal regulation TA = 25°C, 30ms pulse 0.01 0.04 %/W
SVR Supply voltage rejection f = 120 Hz, CO = 25 µF,CADJ = 25 µF,
IO = 1.5 A, VI = 6.25 ± 3 V, TA = 25°C 60 88 dB
IADJ Adjust pin current VI = 4.25 V, IO = 10 mA 40 120 μA
ΔIADJ Adjust pin current change (1) IO = 10 mA to 1.5 A, VI = 2.8 to 16.5 V 0.2 5 μA
eN RMS output noise voltage (%
of VO)TA = 25°C, f =10 Hz to 10 kHz 0.003 %
S Temperature stability 0.5 %
S Long term stability TA = 125°C, 1000 Hrs 0.5 %
1. See short-circuit current curve for available output current at fixed dropout.
LD1086xx Typical application
Doc ID 6739 Rev 27 17/44
6 Typical application
Unless otherwise specified TJ = 25 °C, CI = CO = 10 µF.
Figure 4. Output voltage vs. temp. (VI = 5 V) Figure 5. Output voltage vs. temp. (VI = 15 V)
Figure 6. Output voltage vs. temperature
(VI = 4.25 V)
Figure 7. Short circuit current vs. dropout
voltage
Figure 8. Line regulation vs. temperature Figure 9. Load regulation vs. temperature
Typical application LD1086xx
18/44 Doc ID 6739 Rev 27
Figure 10. Dropout voltage vs. temperature Figure 11. Dropout voltage vs. output current
Figure 12. Adjust pin current vs. input voltage Figure 13. Adjust pin current vs. temperature
Figure 14. Adjust pin current vs. output
current
Figure 15. Quiescent current vs. output
current
LD1086xx Typical application
Doc ID 6739 Rev 27 19/44
Figure 16. Quiescent current vs. input voltage Figure 17. Supply voltage rejection vs. output
current
Figure 18. Supply voltage rejection vs.
frequency
Figure 19. Supply voltage rejection vs.
temperature
Figure 20. Minimum load current vs.
temperature
Figure 21. Stability for adjustable
Typical application LD1086xx
20/44 Doc ID 6739 Rev 27
Figure 22. Stability for 2.85 V Figure 23. Stability for 12 V
Figure 24. Line transient (VI = 12 to 13 V) Figure 25. Line transient (IO = 200 mA)
VI = 12 to 13 V, IO = 200 mA, CI = 1 µF (tant), CO = 10 µF
(tant), No CADJ
VI = 12 to 13 V, IO = 200 mA, CI = 1 µF (tant), CO = 10 µF
(tant), No CADJ
Figure 26. Line transient (CADJ = 1 µF) Figure 27. Load transient
VI = 12 to 13 V, IO = 200 mA, CI = 1 µF (tant), CO = 10 µF
(tant), CADJ = 1 µF
VI = 13 V, IO = 0.1 to 1.5 A, CI = 1 µF (tant), CO = 10 µF
(tant) CADJ = 1 µF
LD1086xx Typical application
Doc ID 6739 Rev 27 21/44
Figure 28. Load transient (Trise = Tfall = 10 µs) Figure 29. Thermal protection
VI = 13 V, IO = 0.1 to 1.5 A, CI = 1 µF (tant), CO = 10 µF
(tant), CADJ = 1 µF
VO = 2.85 V
Package mechanical data LD1086xx
22/44 Doc ID 6739 Rev 27
7 Package mechanical data
In order to meet environmental requirements, ST offers these devices in different grades of
ECOPACK® packages, depending on their level of environmental compliance. ECOPACK®
specifications, grade definitions and product status are available at:
www.st.com
.
ECOPACK® is an ST trademark.
In spite of some difference in tolerances, the packages are compatible.
Table 12. TO-220 mechanical data
Dim.
Type STD - ST Dual Gauge Type STD - ST Single Gauge
mm. mm.
Min. Typ. Max. Min. Typ. Max.
A 4.40 4.60 4.40 4.60
b 0.61 0.88 0.61 0.88
b1 1.14 1.70 1.14 1.70
c 0.48 0.70 0.48 0.70
D 15.25 15.75 15.25 15.75
D1 1.27
E 10.00 10.40 10.00 10.40
e 2.40 2.70 2.40 2.70
e1 4.95 5.15 4.95 5.15
F 1.23 1.32 0.51 0.60
H1 6.20 6.60 6.20 6.60
J1 2.40 2.72 2.40 2.72
L 13.00 14.00 13.00 14.00
L1 3.50 3.93 3.50 3.93
L20 16.40 16.40
L30 28.90 28.90
∅P 3.75 3.85 3.75 3.85
Q 2.65 2.95 2.65 2.95
LD1086xx Package mechanical data
Doc ID 6739 Rev 27 23/44
Note: 1 Maximum resin gate protrusion: 0.5 mm.
2 Resin gate position is accepted in each of the two positions shown on the drawing, or their
symmetrical.
Figure 30. Drawing dimension TO-220 (type STD-ST Dual Gauge)
0015988_S
Package mechanical data LD1086xx
24/44 Doc ID 6739 Rev 27
Figure 31. Drawing dimension TO-220 (type STD-ST Single Gauge)
8174627_B
LD1086xx Package mechanical data
Doc ID 6739 Rev 27 25/44
Figure 32. Drawing dimension tube for TO-220 Dual Gauge (mm.)
Figure 33. Drawing dimension tube for TO-220 Single Gauge (mm.)
Package mechanical data LD1086xx
26/44 Doc ID 6739 Rev 27
Dim.
mm. inch.
Min. Typ. Max. Min. Typ. Max.
A 2.2 2.4 0.086 0.094
A1 0.91.1 0.035 0.043
A2 0.030.230.001 0.009
B 0.64 0.90.025 0.035
b4 5.2 5.4 0.204 0.212
C 0.45 0.6 0.017 0.023
C2 0.480.6 0.0190.023
D 6 6.2 0.236 0.244
D1 5.1 0.200
E 6.4 6.6 0.252 0.260
E1 4.7 0.185
e2.280.090
e1 4.4 4.6 0.1730.181
H9.35 10.1 0.3680.397
L 1 0.039
(L1) 2.80.110
L2 0.80.031
L4 0.6 1 0.0230.039
R 0.2 0.008
V2 0° 8°0° 8°
DPAK mechanical data
0068772-F
LD1086xx Package mechanical data
Doc ID 6739 Rev 27 27/44
Figure 34. Drawing dimension D²PAK (type STD-ST)
0079457/L
Package mechanical data LD1086xx
28/44 Doc ID 6739 Rev 27
Figure 35. Drawing dimension D²PAK (type WOOSEOK-SUBCON.)
0079457/L
LD1086xx Package mechanical data
Doc ID 6739 Rev 27 29/44
Note: The D²PAK package coming from the subcontractor Wooseok is fully compatible with the
ST's package suggested footprint.
Table 13. D²PAK mechanical data
Dim.
Type STD-ST Type WOOSEOK-Subcon.
mm. mm.
Min. Typ. Max. Min. Typ. Max.
A 4.40 4.60 4.30 4.70
A1 0.03 0.23 0 0.20
b 0.70 0.93 0.70 0.90
b2 1.14 1.70 1.17 1.37
c 0.45 0.60 0.45 0.50 0.60
c2 1.23 1.36 1.25 1.30 1.40
D 8.95 9.35 9 9.20 9.40
D1 7.50 7.50
E 10 10.40 9.80 10.20
E1 8.50 7.50
e2.54 2.54
e1 4.88 5.28 5.08
H 15 15.85 15 15.30 15.60
J1 2.49 2.69 2.20 2.60
L 2.29 2.79 1.79 2.79
L1 1.27 1.40 1 1.40
L2 1.30 1.75 1.20 1.60
R0.4 0.30
V2 0° 8° 0° 3°
Package mechanical data LD1086xx
30/44 Doc ID 6739 Rev 27
Figure 36. D²PAK footprint recommended data
Table 14. Footprint data
Values
mm. inch.
A 12.20 0.480
B 9.75 0.384
C 16.90 0.665
D 3.50 0.138
E 1.60 0.063
F 2.54 0.100
G 5.08 0.200
LD1086xx Package mechanical data
Doc ID 6739 Rev 27 31/44
Figure 37. Drawing dimension D²PAK/A (type STD-ST)
7106164/E
Package mechanical data LD1086xx
32/44 Doc ID 6739 Rev 27
Figure 38. Drawing dimension D²PAK/A (type WOOSEOK-Subcon.)
7106164/E
LD1086xx Package mechanical data
Doc ID 6739 Rev 27 33/44
Note: The D²PAK/A package coming from the subcontractor Wooseok is fully compatible with the
ST's package suggested footprint.
Table 15. D²PAK/A mechanical data
Dim.
Type STD-ST Type WOOSEOK-Subcon.
mm. mm.
Min. Typ. Max. Min. Typ. Max.
A 4.40 4.60 4.30 4.70
A1 0.03 0.23 0 0.20
b 0.70 0.93 0.70 0.90
b1 0.80 1.30
b2 1.14 1.70 1.17 1.37
c 0.45 0.60 0.45 0.50 0.60
c2 1.23 1.36 1.25 1.30 1.40
D 8.95 9.35 9 9.20 9.40
D1 7.50 7.50
E 10 10.40 9.80 10.20
E1 8.50 7.50
e2.54 2.54
e1 4.88 5.28 5.08
H 15 15.85 15 15.30 15.60
J1 2.49 2.69 2.20 2.60
L 2.29 2.79 1.79 2.79
L1 1.27 1.40 1 1.40
R0.4 0.30
V2 0° 8° 0° 3°
Package mechanical data LD1086xx
34/44 Doc ID 6739 Rev 27
Figure 39. D²PAK/A footprint recommended data
Table 16. Footprint data
Values
mm. inch.
A 12.20 0.480
B 9.75 0.384
C 16.90 0.665
D 3.50 0.138
E 1.60 0.063
F 2.54 0.100
G 5.08 0.200
LD1086xx Package mechanical data
Doc ID 6739 Rev 27 35/44
Table 17. DFN8L (4x4 mm.) mechanical data
Dim. mm.
Min. Typ. Max.
A 0.80 0.90 1
A1 0 0.02 0.05
A3 0,20
b 0.23 0.30 0.38
D 3.90 4 4.10
D2 2.82 3 3.23
E 3.90 4 4.10
E2 2.05 2.20 2.30
e0.80
L 0.40 0.50 0.60
Package mechanical data LD1086xx
36/44 Doc ID 6739 Rev 27
Figure 40. DFN8L package outline
LD1086xx Package mechanical data
Doc ID 6739 Rev 27 37/44
Figure 41. DFN8L footprint - recommended data
Package mechanical data LD1086xx
38/44 Doc ID 6739 Rev 27
Figure 42. DFN8L carrier tape (dimension are in mm.)
7279936
LD1086xx Package mechanical data
Doc ID 6739 Rev 27 39/44
Figure 43. Reel DFN8L drawing
Table 18. Reel DFN8L dimensions
Dim. mm. inch.
Min. Typ. Max. Min. Typ. Max.
A 330 12.992
C 12.8 13.0 13.2 0.504 0.512 0.519
D20.2 0.795
N60 2.362
T 22.4 0.882
Package mechanical data LD1086xx
40/44 Doc ID 6739 Rev 27
Dim.
mm. inch.
Min. Typ. Max. Min. Typ. Max.
A330 12.992
C12.813.0 13.2 0.504 0.512 0.519
D 20.2 0.795
N60 2.362
T22.40.882
Ao 6.806.90 7.00 0.2680.272 0.2.76
Bo 10.40 10.50 10.60 0.4090.4130.417
Ko 2.55 2.65 2.75 0.100 0.104 0.105
Po 3.94.0 4.1 0.1530.157 0.161
P7.98.0 8.1 0.311 0.315 0.319
Tape & reel DPAK-PPAK mechanical data
LD1086xx Package mechanical data
Doc ID 6739 Rev 27 41/44
Dim.
mm. inch.
Min. Typ. Max. Min. Typ. Max.
A180 7.086
C 12.813.0 13.2 0.504 0.512 0.519
D 20.2 0.795
N60 2.362
T 14.4 0.567
Ao 10.50 10.6 10.70 0.4130.417 0.421
Bo 15.70 15.80 15.90 0.6180.622 0.626
Ko 4.80 4.90 5.00 0.189 0.193 0.197
Po 3.94.0 4.1 0.1530.157 0.161
P 11.912.0 12.1 0.4680.472 0.476
Tape & reel D2PAK-P2PAK-D2PAK/A-P2PAK/A mechanical data
Order codes LD1086xx
42/44 Doc ID 6739 Rev 27
8 Order codes
Table 19. Order codes
Packages
TO-220 D²PAK D²PAK/A DPAK DFN8 Output
voltages
LD1086V18 LD1086D2T18TR LD1086DT18TR 1.8 V
LD1086D2T25TR LD1086DT25TR 2.5 V
LD1086V33 LD1086D2T33TR LD1086D2M33TR LD1086DT33TR 3.3 V
LD1086D2T50TR LD1086DT50TR 5.0 V
LD1086D2T12TR 12.0 V
LD1086V LD1086D2TTR LD1086D2MTR LD1086DTTR LD1086PUR ADJ
LD1086V-DG (1)
1. TO-220 Dual Gauge frame.
ADJ
LD1086VY (2)
2. Automotive Grade products.
LD1086DTTRY (2) ADJ
LD1086xx Revision history
Doc ID 6739 Rev 27 43/44
9 Revision history
Table 20. Document revision history
Date Revision Changes
16-May-2006 14 Order codes updated and new template.
19-Jan-2007 15 D²PAK mechanical data updated and add footprint data.
05-Apr-2007 16 Order codes updated.
07-Jun-2007 17 Order codes updated.
19-Jul-2007 18 Add note on
Figure 2
.
03-Dec-2007 19 Modified:
Ta b l e 1 9
.
31-Jan-2008 20 Added new order codes for Automotive grade products.
18-Feb-2008 21 Modified:
Table 19 on page 42
.
14-Jul-2008 22 Modified:
Table 1 on page 1
and
Table 19 on page 42
.
10-Mar-2010 23 Added:
Table 12 on page 22
,
Figure 30 on page 23
,
Figure 31 on page 24
,
Figure 32
and
Figure 33 on page 25
.
15-Nov-2010 24 Modified: RthJC value for TO-220
Table 3 on page 7
.
11-Jul-2011 25 Modified:
Figure 24
,
Figure 25 on page 20
and
Table 19 on page 42
.
10-Feb-2012 26 Added: order code LD1086V-DG
Table 19 on page 42
.
15-Mar-2012 27
Added: new order code LD1086PUR
Table 19 on page 42
and new package
mechanical data DFN8 (4x4 mm)
Table 17 on page 35
,
Figure 40 on page 36
,
Figure 41 on page 37
,
Figure 42 on page 38
and
Figure 43 on page 39
.
LD1086xx
44/44 Doc ID 6739 Rev 27
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